Metal mold



' UNTTE STATES PATENT OEEIcE.

THOMAS VARE, OF TRENTON, NE JERSEY.

METAL MOLD.

SPECIFICATION forming part of Letters Patent No. 394,089, dated December 4, 1888.

Application filed $eptember 18, 1888. Serial No. 285,680. (No model.)

To all whom it may concern.-

Be it known that l, THOMAs \V. VARE, a citizen of the United States, and a resident of Trenton, in the county of Mercer and State of New Jersey, have invented certain new and useful ln'iprovements in Metal Molds; and I do declare the following to be a full, clear, and exact description of thei nvention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Figure 1 of the drawings is a representation of this invention and is a vertical section between the two halves of the molds. Fig. 2 is a vertical section taken across the molds.

is a detail and a horizontal section.

The invention relates to improvements in molds for casting turn-buckles and other articles of iron; and it consists in the construction and novel arrangei'nent of parts, as hereinafter set forth.

In casting turn-lnickles and the like great dit'ficulty is experiended in the fact that by shrinkage in an iron mold as ordinarily constructed the metal is liable to break, rendering the article cast of no use, and my object is to obviate this difficulty by so constructing the mold that it will contract with the shrink age of the casting.

Referring to the accompanying drawings, A designates two vertical frames or boxings, one of which may be rigidly secured to the base B and the other may have its lower end seated and adapted to slide in the guideway C of the base and operated by means of the screw I), engaging a threaded opening in the depending lug u, and having its ends projecting through opei'iings in the lmsedrame, one of which ends is provided with stop-collars t) and the other with a hand lever or wheel, 0.

The base and opcratin screw, as above described, may be dispensed with, if so desired, and th e two frames A, having th e mold therein, may be secured together by means of flaskclamps and dowels or by any other well-known means.

E designates the lower sections of the metal mold, i the upper sections, and G the middle or intermediate sections. The sections E are l removably secured by bolts or otherwise withl in the boxings, and have the lower portion of the impressions H upon their face. The upper sections, F, are transversely beveled at (Z l on their edges, so as to slide vertically in the boxings, and the converging sides of the boxings, by engaging the beveled sides (7, hold the sections in a vertical position.

The sections F are provided with handles c 1* for convenience in lifting them out of the boxing when a new mold is to be placed therein.

The sections G are reinovably secured to plates l, which have journals (1 at the bottom of their ends projecting through bearings in the boxing, shown, so that when the gearings e on the ends of the respective journals are operated by means of a lever,f, extending from one set of gearing, the plates I, bearing the sections G, may be turned outward and downward to allow the upper sections of the mold to fall with the contraction of the metal.

The bottoms of the sections F and the tops of the sections G are beveled in a reversed di- 1 rection, so that the fall of the upper sections commences at the first movement of the lever.

It may be here stated that the metal chills very quickly in iron molds, and that the intermediate sections should be turned down immediately after the molten metal is poured.

As shown in the drawings, the impressions II for the turn-buckles have the shank portions in the sections G and the ends in the top and bottom sections, and each pair are connected by branches 9 from the gate J, and vent-openings 71 extend upward and outward from the top of each impression.

It is necessary to till all the molds or impressions at one pouring. I therefore provide the V-shaped gate, which rests upon transverse bars K and has the openings in its bottom, which register with their respective molds.

l lavin descril )cd my invention, what I claim 1. A metal mold for turn-buckles and other castings, comprising the lower sections, the vertically-movable upper sections, and the intermediate sections mounted to turn on journals, the said sect-ions being arranged in suitable boxings, substantially as specified.

i. The combination, with the boxings, of

the fixed vertical boxing and its removable upper and lower mold-sections, the plate provided with journals at its ends projecting through bearings in the boxing, and the interm ediate mold-sections, of the movable boxing carrying similar plates and mold-sections, and the operatingmechanism, substantially as specified.

In testimony whereof I aifix my signature in presence of two Witnesses.

THOMAS W. VARE. Vitnesses:

WM. H. BAKER, THOS. C. LoNo'roN, 

